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Statistics of monthly and annual mean discharges
[m, more than 1 year of occurrence]
__________________________________________________________________________________________________________
Maximum Minimum Mean
______________________ ______________________ _____________________________________________
Water year Water year Standard Coeffi- Percentage
Month Discharge of Discharge of Discharge deviation cient of of annual
(ft3/s) occurrence (ft3/s) occurrence (ft3/s) (ft3/s) variation discharge
__________________________________________________________________________________________________________
October 130 1952 0 m 13.1 28.8 2.20 1.76
November 102 1952 0 m 11.0 24.6 2.24 1.48
December 77.1 1951 0 m 5.60 16.1 2.87 0.75
January 64.5 1951 0 m 3.79 12.0 3.16 0.51
February 62.1 1951 0 m 3.29 10.8 3.29 0.44
March 437 1945 0 m 76.7 124 1.62 10.3
April 1,540 1950 0.078 1981 311 381 1.22 41.8
May 2,620 1950 0.866 1980 126 370 2.94 17.0
June 1,030 1950 0 1980 82.9 179 2.16 11.2
July 820 1950 0 m 77.4 153 1.97 10.4
August 363 1949 0 m 19.7 57.4 2.91 2.65
September 144 1944 0 m 12.5 30.6 2.45 1.68
Annual 543 1950 1.24 1977 63.3 92.7 1.46 100
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Monthly and annual flow duration, in cubic feet per second
______________________________________________________________________________________________________________________
Percentage
of days
discharge Jan. Feb. March April May June July Aug. Sept. Oct. Nov. Dec. Annual
equaled or
exceeded
______________________________________________________________________________________________________________________
95 0 0 0 0.23 0.23 0 0 0 0 0 0 0 0
90 0 0 0 1.60 1.10 0.22 0 0 0 0 0 0 0
85 0 0 0 5.77 1.70 0.71 0 0 0 0 0 0 0
80 0 0 0 8.53 3.72 1.50 0.14 0 0 0 0 0 0
75 0 0 0 11.4 5.47 2.32 0.29 0 0 0 0 0 0
70 0 0 0 15.8 6.98 3.10 0.62 0 0 0 0 0 0
65 0 0 0.06 21.9 9.56 3.76 0.91 0 0 0 0 0 0.07
60 0 0 0.13 30.0 13.0 5.08 1.30 0.04 0 0 0.15 0 0.16
55 0 0 0.26 40.7 17.1 6.38 1.90 0.15 0.02 0.08 0.37 0.07 0.35
50 0 0 0.37 57.3 21.7 8.35 3.53 0.30 0.20 0.28 0.49 0.16 0.77
45 0.02 0 1.10 80.4 26.5 11.1 4.85 0.60 0.38 0.52 0.67 0.28 1.10
40 0.09 0.06 5.78 114 32.4 14.4 7.63 0.85 0.53 0.95 1.20 0.37 3.13
35 0.15 0.08 15.0 166 38.3 19.4 13.8 1.20 1.00 1.70 1.60 0.49 5.90
30 0.19 0.11 22.5 234 49.6 28.1 25.0 2.40 2.00 3.59 3.86 0.64 10.4
25 0.25 0.19 34.0 334 65.5 41.8 43.2 4.12 3.33 5.90 5.51 1.10 18.6
20 0.33 0.24 59.1 470 96.3 68.0 71.7 8.24 6.08 14.7 8.30 2.00 32.6
15 0.73 0.42 97.2 653 161 109 108 19.4 14.7 24.7 16.9 3.94 60.3
10 14.1 12.1 206 945 259 214 181 53.1 39.4 44.9 46.0 14.9 109
5 28.8 25.1 490 1,610 574 447 495 100 75.7 85.3 74.5 48.7 306
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Probability of annual high discharges
[ng, statistic not given]
__________________________________________________________________________________________________
Maximum average discharge
(ft3/s)
___________________________________________________________
Recurrence Maximum
Exceedance interval instantaneous 3-day period 7-day period 15-day period 30-day period
probability (years) (ft3/s)
__________________________________________________________________________________________________
0.99 1.01 39.2 21.0 17.3 13.4 8.09
0.95 1.05 118 72.5 56.3 40.9 25.7
0.90 1.11 202 132 100 71.0 45.4
0.80 1.25 368 258 193 133 87.0
0.50 2 1,010 791 587 397 267
0.20 5 2,310 1,980 1,500 1,030 707
0.10 10 3,350 2,960 2,310 1,600 1,110
0.04 25 4,730 4,320 3,470 2,460 1,720
0.02 50 5,780 5,360 4,420 3,190 2,240
0.01 100 6,820 6,390 5,400 3,970 2,790
0.005 200 7,830 7,410 6,410 4,800 3,380
0.002 500 9,120 ng ng ng ng
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Annual peak discharge and corresponding gage height, period of record
[--, no data]
_____________________________________________________________________________________
Gage Peak Gage Peak
Water Date height discharge Water Date height discharge
year (feet) (ft3/s) year (feet) (ft3/s)
_____________________________________________________________________________________
Annual peak discharge, by year, and corresponding gage height
1944 July 11 18.64 1,030 1971 April 1 10.11 619
1945 March 18 18.48 1,000 1972 April 15 16.26 2,070
1946 March 23 112.02 1,510 1973 March 16 9.30 366
1947 April 14 117.80 4,150 1974 April 15 18.87 2,460
1948 April 13 -- 1,040 1975 April 19 17.81 2,330
1949 June 3 19.83 1,260 1976 March 31 11.32 785
1950 May 11 118.96 4,660 1977 April 10 4.13 42
1951 April 8 112.56 2,100 1978 April 9 19.22 2,240
1952 July 21 17.80 979 1979 April 19 23.36 4,880
1953 June 17 14.11 389 1980 April 3 9.99 615
1954 April 13 14.63 376 1981 May 23 11.03 896
1955 April 5 14.10 289 1982 April 2 13.06 1,070
1956 April 13 112.50 1,960 1983 March 8 13.84 1,240
1957 June 23 14.99 304 1984 June 11 16.17 2,260
1958 July 10 11.48 47 1985 May 13 13.23 1,380
1959 March 31 12.42 96 1986 March 30 14.59 1,720
1960 April 7 16.04 492 1987 July 24 15.80 1,730
1961 March 9 13.51 100 1988 March 26 7.86 250
1962 June 11 19.87 1,240 1989 April 7 21.18 3,490
1963 April 8 14.60 274 1990 June 2 6.65 254
1964 April 22 15.41 450 1991 May 23 11.88 1,120
1965 April 13 116.87 3,120 1992 March 8 10.36 430
1966 April 2 13.85 1,460 1993 April 2 13.78 660
1967 March 30 11.54 866 1994 September 19 11.50 995
1968 March 27 7.35 221 1995 March 29 15.21 1,500
1969 April 12 22.28 3,910 1996 April 15 19.01 2,100
1970 April 9 13.38 1,320 1997 April 18 25.45 4,300
Annual peak discharge, from highest to lowest, and corresponding gage height
1979 April 19 23.36 4,880 1986 March 30 14.59 1,720
1950 May 11 118.96 4,660 1946 March 23 112.02 1,510
1997 April 18 25.45 4,300 1995 March 29 15.21 1,500
1947 April 14 117.80 4,150 1966 April 2 13.85 1,460
1969 April 12 22.28 3,910 1985 May 13 13.23 1,380
1989 April 7 21.18 3,490 1970 April 9 13.38 1,320
1965 April 13 116.87 3,120 1949 June 3 19.83 1,260
1974 April 15 18.87 2,460 1962 June 11 19.87 1,240
1975 April 19 17.81 2,330 1983 March 8 13.84 1,240
1984 June 11 16.17 2,260 1991 May 23 11.88 1,120
1978 April 9 19.22 2,240 1982 April 2 13.06 1,070
1951 April 8 112.56 2,100 1948 April 13 -- 1,040
1996 April 15 19.01 2,100 1944 July 11 18.64 1,030
1972 April 15 16.26 2,070 1945 March 18 18.48 1,000
1956 April 13 112.50 1,960 1994 September 19 11.50 995
1987 July 24 15.80 1,730 1952 July 21 17.80 979
1981 May 23 11.03 896 1973 March 16 9.30 366
1967 March 30 11.54 866 1957 June 23 14.99 304
1976 March 31 11.32 785 1955 April 5 14.10 289
1993 April 2 13.78 660 1963 April 8 14.60 274
1971 April 1 10.11 619 1990 June 2 6.65 254
1980 April 3 9.99 615 1988 March 26 7.86 250
1960 April 7 16.04 492 1968 March 27 7.35 221
1964 April 22 15.41 450 1961 March 9 13.51 100
1992 March 8 10.36 430 1959 March 31 12.42 96
1953 June 17 14.11 389 1958 July 10 11.48 47
1954 April 13 14.63 376 1977 April 10 4.13 42
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1 Adjusted to current datum.
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Monthly and annual mean discharges, in cubic feet per second
[Data were not rounded in accordance with U.S. Geological Survey publication standards; --, no data]
__________________________________________________________________________________________________________________________________
Year Oct. Nov. Dec. Jan. Feb. March April May June July Aug. Sept. Annual
__________________________________________________________________________________________________________________________________
1944 -- -- -- -- -- 0.142 83.3 43.5 114.2 327.2 163.9 143.8 --
1945 19.0 11.8 3.56 0.823 0.350 437.2 629.4 184.5 22.4 7.24 2.61 1.83 110.3
1946 1.29 0.820 0.084 0 0 363.5 280.2 60.7 13.0 12.8 0.058 0.453 61.4
1947 3.99 1.68 0.510 0 0 22.0 1,273 424.3 607.5 129.9 65.9 56.0 214.2
1948 73.0 55.8 47.5 35.4 25.1 28.9 656.3 265.8 102.2 76.0 40.6 11.7 117.7
1949 10.8 19.8 17.8 18.2 14.9 18.1 216.7 198.3 411.5 585.2 362.7 74.2 163.4
1950 60.5 74.3 58.6 27.2 23.8 51.9 1,537 2,617 1,030 821.0 133.7 50.8 543.3
1951 118.4 85.7 77.1 64.5 62.1 107.0 1,190 714.6 301.7 102.5 60.7 122.5 250.2
1952 129.8 101.8 13.1 12.4 10.8 14.8 390.7 125.3 90.3 201.9 54.3 3.80 95.7
1953 1.30 0.877 0.681 0.174 0.132 52.1 46.5 38.5 100.7 119.6 6.61 1.64 30.9
1954 0.039 0.227 0.742 0.206 0.050 6.64 135.4 60.2 22.4 2.21 0.106 0 19.0
1955 0 0.053 0.106 0 0 0.484 69.5 9.39 14.9 17.6 11.2 0 10.2
1956 0 0 0 0 0 0.010 317.2 37.5 23.7 1.02 0.035 0.090 31.2
1957 0 0 0 0 0 40.5 35.5 10.3 41.6 17.2 0.906 5.17 12.6
1958 3.01 7.03 0.945 0 0.339 1.33 4.13 1.35 3.00 15.5 0.255 0 3.09
1959 0 0 0 0 0.007 18.3 19.9 6.75 4.96 1.27 0 0 4.28
1960 0 0 0 0 0 23.7 108.9 10.6 12.6 8.27 0.277 3.47 13.9
1961 0 0.117 0 0 0 35.6 12.9 25.0 3.03 0 0 0.013 6.46
1962 0.387 0 0 0 0 0.258 97.9 198.5 347.1 264.3 8.75 1.50 76.8
1963 0.687 1.60 0.713 0.155 0 20.6 33.7 11.6 32.7 0.445 0 0 8.49
1964 0 0 0 0 0 0 103.4 23.2 18.6 3.26 0.061 0.167 12.3
1965 0.077 0.123 0 0 0 0 573.3 25.9 29.7 21.0 3.63 3.76 54.2
1966 26.9 5.43 2.72 0.152 0.068 389.4 291.5 50.4 9.99 2.38 1.70 2.32 65.6
1967 0.210 0.030 0 0 0 60.1 143.6 30.1 9.92 1.17 0 0 20.4
1968 0 0 0 0 0 19.9 11.8 5.42 15.7 1.06 0 0 4.49
1969 0 0 0 0 0 0 608.5 31.4 24.7 42.8 3.19 2.34 58.8
1970 2.85 2.29 0.768 0.177 0.168 1.47 350.4 58.0 137.6 2.33 0.045 0.137 45.9
1971 0.255 0.563 0.023 0 0 46.7 100.7 5.39 2.76 0.458 0 0 13.0
1972 60.7 60.2 4.57 0.500 0 317.9 321.3 52.9 4.71 5.26 2.43 0.587 69.3
1973 0.837 0 0.278 0.098 0.078 84.1 10.3 4.21 0.741 0 0 25.6 10.6
1974 30.7 5.38 1.41 0.291 0.174 0.165 775.2 149.9 20.7 1.25 3.88 0.078 81.8
1975 0.232 6.35 0.593 0.235 0.121 0.128 552.8 86.0 17.0 230.1 0.889 0.009 74.4
1976 0.001 0.866 0.008 0 0.004 68.1 71.0 2.44 4.06 0.014 0 0 12.2
1977 0 0 0 0 0 2.79 10.2 1.36 0.565 0 0 0.004 1.24
1978 0.501 0.180 0.020 0.020 0.020 15.5 676.3 9.95 0.998 0.018 0.004 0 57.9
1979 0 0 0 0 0 0 894.8 43.7 13.4 53.4 1.43 0.087 83.0
1980 0 0.626 0.070 0.015 0 6.75 105.9 0.866 0 0 0.033 0 9.39
1981 0 0 0 0 1.36 1.30 0.078 47.7 3.92 1.18 0.199 4.64 5.09
1982 12.7 5.32 1.54 0.097 0.228 70.8 337.3 24.8 2.86 1.18 0.123 0 37.9
1983 12.0 7.46 5.04 1.33 0.790 342.4 68.8 4.34 247.1 55.7 20.5 18.5 65.6
1985 -- -- -- -- -- -- 14.3 297.6 11.2 9.13 8.14 3.83 --
1986 4.61 1.82 0.568 0.445 0.400 164.2 321.9 135.5 19.3 18.4 4.19 0.547 56.1
1987 0.319 1.04 1.20 0.338 0.270 206.2 20.9 33.2 5.92 259.6 12.6 1.44 46.0
1988 0.745 0.706 0.626 0.197 0.164 81.9 49.7 1.56 0.100 0 2.92 5.68 12.1
1989 0.098 0.073 0 0 0 0.484 608.6 12.5 4.60 0.076 0 0 51.5
1990 4.43 -- -- -- -- -- 28.1 3.57 30.7 5.15 0 0 --
1991 0 -- -- -- -- 9.20 4.93 72.0 27.4 2.84 0.125 0 --
1992 0 -- -- -- -- 63.7 6.35 2.73 17.4 28.7 20.6 21.9 --
1993 3.35 -- -- -- -- -- 133.0 5.23 4.69 100.2 36.9 0.480 --
1994 -- -- -- -- -- -- 109.8 32.3 92.9 124.6 1.83 91.9 --
1995 52.6 23.1 -- -- -- 407.9 77.3 83.5 11.8 167.7 4.39 0.850 --
1996 17.8 -- -- -- -- -- 644.2 223.5 11.4 2.83 0.182 0.023 --
1997 0.135 -- -- -- -- -- 1,309 81.1 295.5 250.0 2.68 1.33 --
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